Posted by SadFarmall on September 27, 2013 at 15:42:21 from (112.213.217.210):
In Reply to: cycle bar mower timing posted by maxwell99 on September 27, 2013 at 13:28:29:
Unless it has the wrong pitman fitted you should not cut the pitman back as this will only partially fix the issue. Check the register of the mower as follows:
1. Check and set the cutter bar lead, usually ¼" for every foot of cutter bar length.
2. Turn the flywheel until the knife is as far in as it will travel. Note the position of the knife section tips in relation to the guards. Are they centered in the guards?
3. Turn the flywheel until the knife is as far out as it will travel. Note the position of the knife section tips in relation to the guards.
You need to know from the Owner's Manual or Parts List or a reliable source the correct pitman length. You need to make sure that this length pitman is fitted. Once this is done, if the register is still incorrect, you need adjust it as per Owner's Manual. It is a great mistake to fit the correct pitman and attempt to set the register by sawing the pitman down.
NOTE:
a). When you alter the lead, the register will alter with it; always set the lead first.
b). The motion of the flywheel means that the pitman is not always parallel with the cutter bar in one axis of an x and y graph; therefore use the correct pitman.
Because of these factors, simply altering the length of the pitman will not set the register correctly.
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